x_gf3:=FiniteField(3); x_gf3x:=PolynomialAlgebra(x_gf3); x_gf3xy:=PolynomialAlgebra(x_gf3x); x_f:=x_gf3xy.1^2+1; x_F:=FunctionField(x_f); x_O:=MaximalOrderFinite(x_F); x_a := x_O.2+1; RepresentationMatrix(x_a);